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      <img src="../logo.svg" class="logo" alt=""><h1>Map - points - Create leaflet html widget map of points using table with lat lon</h1>
      <small class="dont-index">Source: <a href="https://github.com/USEPA/EJAM/blob/HEAD/R/mapfast.R" class="external-link"><code>R/mapfast.R</code></a></small>
      <div class="d-none name"><code>mapfast.Rd</code></div>
    </div>

    <div class="ref-description section level2">
    <p>Map - points - Create leaflet html widget map of points using table with lat lon</p>
    </div>

    <div class="section level2">
    <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">mapfast</span><span class="op">(</span></span>
<span>  <span class="va">mydf</span>,</span>
<span>  radius <span class="op">=</span> <span class="fl">3</span>,</span>
<span>  column_names <span class="op">=</span> <span class="st">"all"</span>,</span>
<span>  labels <span class="op">=</span> <span class="va">column_names</span>,</span>
<span>  browse <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  color <span class="op">=</span> <span class="st">"#03F"</span></span>
<span><span class="op">)</span></span></code></pre></div>
    </div>

    <div class="section level2">
    <h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>


<dl><dt id="arg-mydf">mydf<a class="anchor" aria-label="anchor" href="#arg-mydf"></a></dt>
<dd><p>Typically something like the output of ejamit()$results_bysite, but
can also be the full output of <code><a href="ejamit.html">ejamit()</a></code> in which case this uses just the $results_bysite table,
and in general mydf can be a data.frame or data.table that has a set of
points or polygons or Census FIPS codes.</p><ol><li><p>point data defined by columns named lat and lon, or columns that <code><a href="latlon_infer.html">latlon_infer()</a></code> can infer to be that,
as from <code><a href="sitepoints_from_any.html">sitepoints_from_any()</a></code> or <code><a href="ejamit.html">ejamit()</a></code>$results_bysite</p></li>
<li><p>polygon data in a spatial data.frame that has a geometry column of polygons, as from <code><a href="shapefile_from_any.html">shapefile_from_any()</a></code>, or</p></li>
<li><p>Census units defined by FIPS codes in a column called "ejam_uniq_id"
(not fips), where those fips are for States, Counties, Tracts, Blockgroups,
or cities/towns/Census Designated Places (7 digits including any leading zeroes),
e.g., as from names2fips('DE') or ejamit(fips='01')$results_bysite.</p></li>
</ol></dd>


<dt id="arg-radius">radius<a class="anchor" aria-label="anchor" href="#arg-radius"></a></dt>
<dd><p>in miles, converted to meters and passed to leaflet::addCircles()</p></dd>


<dt id="arg-column-names">column_names<a class="anchor" aria-label="anchor" href="#arg-column-names"></a></dt>
<dd><p>If "ej" then nice popup made based on just key EJScreen
indicators. If "all" then every column in the entire mydf table is shown
in the popup. If a vector of colnames, only those are shown in popups.</p></dd>


<dt id="arg-labels">labels<a class="anchor" aria-label="anchor" href="#arg-labels"></a></dt>
<dd><p>The labels used before the column_names, for map popups,
like  label: column_name  (ignored if column_names is ej or all)</p></dd>


<dt id="arg-browse">browse<a class="anchor" aria-label="anchor" href="#arg-browse"></a></dt>
<dd><p>optional logical, set to TRUE if you want the function to
launch a default browser window to show the map
and print the temp filepath and filename in the console.
Normally the map would be shown in the default RStudio viewer pane.</p></dd>


<dt id="arg-color">color<a class="anchor" aria-label="anchor" href="#arg-color"></a></dt>
<dd><p>color of circles or polygons</p></dd>

</dl></div>
    <div class="section level2">
    <h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
    <p>plots a leaflet map with popups with all the columns from mydf,
and returns html widget</p>
    </div>
    <div class="section level2">
    <h2 id="see-also">See also<a class="anchor" aria-label="anchor" href="#see-also"></a></h2>
    <div class="dont-index"><p><code><a href="ejam2map.html">ejam2map()</a></code> <code><a href="popup_from_any.html">popup_from_any()</a></code> <code><a href="mapfastej.html">mapfastej()</a></code></p></div>
    </div>

    <div class="section level2">
    <h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="va">pts</span> <span class="op">=</span> <span class="va">testpoints_100</span></span>
<span><span class="fu">mapfast</span><span class="op">(</span><span class="va">pts</span><span class="op">)</span></span>
<span></span>
<span><span class="co"># out = ejamit(pts, radius = 1)</span></span>
<span><span class="va">out</span> <span class="op">=</span> <span class="va">testoutput_ejamit_100pts_1miles</span></span>
<span></span>
<span><span class="co"># See in RStudio viewer pane</span></span>
<span><span class="fu"><a href="ejam2map.html">ejam2map</a></span><span class="op">(</span><span class="va">out</span><span class="op">)</span></span>
<span><span class="fu"><a href="mapfastej.html">mapfastej</a></span><span class="op">(</span><span class="va">out</span><span class="op">$</span><span class="va">results_bysite</span><span class="op">[</span><span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="fl">12</span>,<span class="fl">31</span><span class="op">)</span>,<span class="op">]</span><span class="op">)</span></span>
<span><span class="kw">if</span> <span class="op">(</span><span class="cn">FALSE</span><span class="op">)</span> <span class="op">{</span> <span class="co"># \dontrun{</span></span>
<span></span>
<span><span class="co"># See in local browser instead</span></span>
<span><span class="fu"><a href="ejam2map.html">ejam2map</a></span><span class="op">(</span><span class="va">out</span>, browse <span class="op">=</span> <span class="cn">T</span><span class="op">)</span></span>
<span></span>
<span><span class="co"># Open folder where interactive map</span></span>
<span><span class="co">#  .html file is saved, so you can share it:</span></span>
<span><span class="va">x</span> <span class="op">=</span> <span class="fu"><a href="ejam2map.html">ejam2map</a></span><span class="op">(</span><span class="va">out</span><span class="op">)</span></span>
<span><span class="va">fname</span> <span class="op">=</span> <span class="fu"><a href="map2browser.html">map2browser</a></span><span class="op">(</span><span class="va">x</span><span class="op">)</span></span>
<span><span class="co"># browseURL(dirname(fname)) # to open the temp folder</span></span>
<span><span class="co"># file.copy(fname, "./map.html") # to copy map file to working directory</span></span>
<span></span>
<span><span class="va">out</span> <span class="op">&lt;-</span> <span class="va">testoutput_ejscreenapi_plus_5</span></span>
<span><span class="fu"><a href="mapfastej.html">mapfastej</a></span><span class="op">(</span><span class="va">out</span><span class="op">)</span></span>
<span><span class="op">}</span> <span class="co"># }</span></span></code></pre></div>
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